return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CBr2F2 (Methane, dibromodifluoro-)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.149889
HF Energy-0.149889
Nuclear repulsion energy146.532390
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PM3
Rotational Constants (cm-1) from geometry optimized at PM3
ABC
0.09028 0.04699 0.03675

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.822
Br2 0.000 1.413 -0.484
Br3 0.000 -1.413 -0.484
F4 -1.069 0.000 1.609
F5 1.069 0.000 1.609

Atom - Atom Distances (Å)
  C1 Br2 Br3 F4 F5
C11.92461.92461.32731.3273
Br21.92462.82692.74252.7425
Br31.92462.82692.74252.7425
F41.32732.74252.74252.1376
F51.32732.74252.74252.1376

picture of Methane, dibromodifluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 94.518 Br2 C1 F4 113.727
Br2 C1 F5 113.727 Br3 C1 F4 113.727
Br3 C1 F5 113.727 F4 C1 F5 107.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability